#pragma once

#include "Protocol.hpp"

#include <iostream>

class Cal
{
public:
    Response Execute(Request &req)
    {
        Response resp(0, 0);
        switch (req.Oper())
        {
            case '+':
                resp.SetResult(req.X() + req.Y());
                break;
            case '-':
                resp.SetResult(req.X() - req.Y());
                break;
            case '*':
                resp.SetResult(req.X() * req.Y());
                break;
            case '/':
                if (req.Y() == 0)
                {
                    resp.SetCode(1); // 1除零错误
                }
                else
                {
                    resp.SetResult(req.X() / req.Y());
                }
                break;
            case '%':
                if (req.Y() == 0)
                {
                    resp.SetCode(2); // 2模零错误
                }
                else
                {
                    resp.SetResult(req.X() % req.Y());
                }
                break;
            default:
                resp.SetCode(3); // 3非法操作
                break;
        }
        return resp;
    }
};